DiagPoly™ Plain Fluorescent Polystyrene Particles, Green, 200 μm (# DFG-T034) are encapsulated with green fluorophores (excitation: 460 nm, emission: 500 nm) and there is no additional coatings or special functional groups on the surface. The density of liquid suspension is 1.05-1.06 g/mL. Sonicate/Vortex the microspheres before each use.